Organophosphane-Promoted Synthesis of Functionalized α,β-Unsaturated Alkenes and Furanones via Direct β-Acylation
作者:Yan-Cheng Liou、Yin-Hsiang Su、Kuan-Chun Ku、Athukuri Edukondalu、Chun-Kai Lin、You-Syuan Ke、Praneeth Karanam、Chia-Jui Lee、Wenwei Lin
DOI:10.1021/acs.orglett.9b03116
日期:2019.10.18
We report a phosphine-mediated direct β-acylation of α,β-unsaturated 1,3-diketones with acyl chlorides and a base. Functionalized furanones were also prepared by the reaction of cinnamic acid and acyl chloride according to our protocol via β-acylation. Our studies revealed that α,β-unsaturated 1,3-diketones with an electron-donating group at the second position favor the formation of β-acylated products
我们报告了膦酰化的α,β-不饱和1,3-二酮与酰氯和碱的直接β-酰化作用。根据我们的方案,肉桂酸和酰氯通过β-酰化反应也可以制备官能化的呋喃酮。我们的研究表明,在第二位带有给电子基团的α,β-不饱和1,3-二酮有利于β-酰化产物的形成,而那些具有氧的物质(如酸酐)则通过空前的C-酰化促进呋喃酮的形成。 /环化顺序。